Add Cronet .so and .jar to tethering apex

Also remove cronet apex related modules and files

Bug: 251054736
Test: atest CronetApiTest
Change-Id: Idd41785fd2f74a153c5bb03f4c00c7cccdb50e7a
diff --git a/Tethering/apex/Android.bp b/Tethering/apex/Android.bp
index 8cf46ef..c590850 100644
--- a/Tethering/apex/Android.bp
+++ b/Tethering/apex/Android.bp
@@ -54,6 +54,7 @@
     name: "com.android.tethering",
     defaults: [
         "ConnectivityApexDefaults",
+        "CronetApexDefaults",
         "r-launched-apex-module",
     ],
     compile_multilib: "both",